PHYSICS HIGH SCHOOL

A material that can easily flow is called aa. fluid.
b. solid.
c. buoyant force.
d. hydraulic material.

Answers

Answer 1
Answer:

Answer:

a. fluid

Explanation:

A fluid is any body that has the property to flow, and lacks rigidity and elasticity, and consequently yields immediately to any force tending to alter its shape and thus adopting the shape of its container. Fluids can be liquids or gases according to the different intensity of the cohesion forces existing between their molecules. In liquids, intermolecular forces allow particles to move freely, although they maintain latent bonds that cause substances in this state to have a constant or fixed volume. Gases, by contrast, consist of well-separated moving particles that collide with each other and try to disperse, such that the gases have no defined shape or volume.
Answer 2
Answer: A material that can easily flow is called a...

A. Fluid.

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An object is thrown downward with an initial velocity of 3 feet per second. The relationship between the distance s it travels and time t is given by s = 3t + 16t2. How long does it take the object to fall 70 feet?

Atoms of elements at the top of a group on the periodic table are smaller than the atoms of elements at the bottom of the group. How does this help explain the difference in the reactivity of metals within a group?

Answers

Well formation of metallic bond depends on free electrons.smaal sized atoms hold their electrons more firmly as compared to large size atoms ,this z due to distance of outer shell electrons by nucleus..in this way no of free electrons affect strength of metallic bond..smaal sized atoms release less free electrons..

Answer:

D.

Explanation:

What kind of heat transfer primarily occurs within a pot of water that is heated on the stove?A. radiation
B. conduction
C. convection
D. temperature

Answers

Answer:

The kind of heat transfer that primarily occurs within a pot of water that is heated on the stove is convection

Explanation:

We will start by defining all the terminologies, then afterward, we will fish out the answer.

RADIATION : Radiation can be define as the transmission of energy  in the form of waves or particles through space or through a material medium, the earth gets the heat of the sun through the process known as radiation.

CONDUCTION :This is the transfer of heat from one object to another object with different temperature when the come in contact with one another.

CONVECTION : Convection can be defined as the transfer of heat from one place to another  by movement of fluids.

TEMPERATURE: This can simply be defined as the degree of hotness or coldness of an object.

From the above definition, we can deduce that the kind of heat transfer that primarily occurs within a pot of water that is heated on the stove is convection
convection. As the water molecules are being heated up at bottom, the molecules with less heat energy then move to take their place. By doing this all the water should reach an equal temperature.

which of the following statements about black holes is false. a. Astronomers have never seen a black hole. b. A black hole sucks in matter like a vacuum cleaner. c. No light can escape from a black hole. d. All of the mass in a black hole is concentrated in a single point.

Answers

I love this question, because it gets at one of the greatest misconceptions about black holes.

Choice-B is false. A black hole does not suck matter in like a vacuum cleaner.

Answer:

a. Astronomers have never seen a black hole.

Explanation:

A black hole is 1-Dimensional point in space-time having density is extremely large such that space-time curvature bends enough for even light cannot escape. All the mass is concentrated at this point. A black hole is formed when a very high mass star dies. It goes supernova and collapses to form a black hole. It sucks in matter like a vacuum cleaner.

Astronomers have seen a black hole by actually viewing the event horizon which is a bright disk surrounding a black hole. Recently an image of a black hole was also released.

Height of cannon 5 m, initial speed of projectile 15m/s, angle of launch 0 degrees. What is the range and time in the air? Please show work!

Answers

Answer:

The range is 15.15 m and the time in the air is 1.01 s

Explanation:

Horizontal Motion

When an object is thrown horizontally (with angle 0°) with a speed v from a height h, it follows a curved path ruled exclusively by gravity until it eventually hits the ground.

The range or maximum horizontal distance traveled by the object can be calculated as follows:

\displaystyle d=v\cdot\sqrt{\frac {2h}{g}}

To calculate the time the object takes to hit the ground, we use the equation below:

\displaystyle t=\sqrt{(2h)/(g)}

The cannon is shot from a height of h=5 m with an initial speed of v=15 m/s. The range is calculated below:

\displaystyle d=15\cdot\sqrt{\frac {2*5}{9.8}}=15*1.01

d = 15.15 m

The time in the air is:

\displaystyle t=\sqrt{(2*5)/(9.8)}

t = 1.01 s

The range is 15.15 m and the time in the air is 1.01 s

Having some knowledge of psychology, you'll shine your shoes and "dress for success" before going to a job interview because you want to

Answers

You do these things before a job interview because you want to benefit from primacy effect. Primacy effect refers to the fact that the things that people notice first about other people are likely to be remembered more easily, meaning that first impressions matter. So if you turn up to your job interview in a neat manner, and you are very presentable, you will be more likely to get that job than if you looked like a hobo.

Answer:

benefit from primacy

Explanation:

WOlf93 I 100% agree with you... dont look like a hobo ppl lol

If a force of 12 n is applied to an object with a mass of 2kg the object will accelerate at

Answers

Using Newton's second law, F= ma
the acceleration would be>
F=ma
->F/m= a
->12/2= a
->6 = a

therefore acceleration is 6 ms^-2
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